What is the health and safety file?

The file must contain information about the current project likely to be needed to ensure health and safety during any subsequent work, such as maintenance,
cleaning, refurbishment or demolition. When preparing the health and safety file, information on the following should be considered for inclusion:
(c) key structural principles (eg bracing, sources of substantial stored energy – including pre- or post-tensioned members) and safe working loads for floors and roofs;